<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./2css3.css">
</head>
<body>
    <div class="bei"></div>
    <div class="zhuti">
        <form action="#">
            <div>
            <input type="email" class="you" placeholder="邮箱/手机号码" pattern="^[a-zA-Z0-9]+([-_.][a-zA-Z0-9]+)*@[a-zA-Z0-9]+([-_.][a-zA-Z0-9]+)*\.[a-z]{2,}$"></div>
            <div>
                <input type="password" class="you" placeholder="密码" pattern="^(?![0-9]+$)(?![a-zA-Z]+$)[0-9A-Za-z]{8,16}$"></div>
            <div class="wai">
                <input type="submit" value="登录" class="deng">
            </div>
            <div class="fen"></div>
            <div class="zhang">
                <input type="submit"class="xeng" value="还没有账号？免费注册">
            </div>
            <div>
                <input type="submit" class="wang" value="忘记密码？重置">
            </div>
            <div>
                <input type="submit" class="wang" value="使用第三方账号登录">
            </div>
        </form>
    </div>
</body>
</html>